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Ultrasound scans of a normal uterus. Transvaginal ultrasound scans of (A) sagittal plane (long) and (B) axial plane (trans) with normal, thin, uniform echogenic endometrium (arrowheads) and subendometrial hypoechoic halo (solid arrows). Transabdominal ultrasound scans of endometrial carcinoma in sagittal plane (C) and axial plane (D). Note heterogeneous echogenicity due to hemorrhage and necrosis (dashed arrows).
